<template>
  <div id="app">
    <div class="todo-container">
      <div class="todo-wrap">
        <Header :add="add" />
        <List
          :todos="todos"
          :changeChecked="changeChecked"
          :deleteDate="deleteDate"
        />
        <Footer :todos="todos" :checkAll="checkAll" :Alldelete="Alldelete" />
      </div>
    </div>
  </div>
</template>

<script>
// import { v4 as uuidv4 } from "uuid";

import Header from "./components/Header";
import List from "./components/List/index.vue";
import Footer from "./components/Footer";

export default {
  name: "App",
  components: {
    Header,
    List,
    Footer,
  },
  data() {
    return {
      todos: [],
    };
  },
  methods: {
    add(newtodo) {
      this.todos.unshift(newtodo);
    },
    //修改是否选中
    changeChecked(id) {
      this.todos = this.todos.map((item) => {
        return item.id === id ? { ...item, done: !item.done } : item;
      });
    },
    deleteDate(id) {
      // const isDelete = confirm("你真的要删掉我吗 =。=");
      // if (!isDelete) return;
      this.todos = this.todos.filter((item) => item.id !== id);
    },
    checkAll(value){
      this.todos = this.todos.map((item)=> ({...item,done:value}))
    },
    Alldelete(){
      this.todos = this.todos.filter((item)=> !item.done)
    }
  },
  mounted(){
    this.todos = JSON.parse(localStorage.getItem("todos")|| "[]")
  },
  watch:{
    todos:{
      deep:true,
      handler(){
       localStorage.setItem("todos",JSON.stringify(this.todos))
      }
    }
  }
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>
